Tension for spoolers.



L. S. BURBANK. TENSION FOR SPOOL FQPPLICATH) N F!LED FEB. 23.1916-Pafeuted Aug 28, 1917 \nvenior.

Louis S. Bu bunK.

LOUIS S. BURIBANK, OF HOPEDALE, MASSACHUSETTS, ASSIGNORaBY MES NEASSIGN- snares rarnnr orrron. I

MENTS, 'IO DRAPERCORPORATION OF HOPEDALE, MASSACHUSETTS, A CORPORA- TION0F MAINE.

' TENSION FOR SPOOLERS.

Specification of Letters Patent.

' Application filed February as, 1916; Serial No. 79,866.

It; all whom it may concern:

lie, it known that I, Lotus S. BURBANK, a citizen of the United States,and resident of Hopedale, county of lVorcester, State of lllassachuscttshave invented an Improve a bobbin, cop or other yarn carrier. In suchmachines there is a considerable difference in the tension of therunning strands which not only causes a lack of uniformity in windingupon the spools or other yarn receivers' but also results in the wastageof a considerable amount of power wherean unnecessary amount of tensionis placed on the yarn running to a large number of spools.

One of the objects of the present invention is to provide a tensionmechanism which may conveniently be regulated to provide for the uniformwinding of the yarn and for thesaving of the power which otherwise iswasted.

Another object of the invention is to provide means for preventing theformation of [knots or kinks in the running strand be tween the spooland the yarn mass from which the spool is wound.

These objects are accomplished in the present invention by passing theyarn'in'imediately after it leaves the yarn carrier over an adjustablerotatable tension device having a non-slipping surface.

Another object of the invention is to providea tension device which mayhc'quickly tl'ircaded by the operator.

Another object of the invention is to pro vide a tension device whichwillpreserve the quality of the yarn by avoiding squeezing, and theconsequent flattening, or scraping or otherwise rougl'iening the surfaceof the yarn. f

A nothcr ol'iject oi the present invention is to provide moansforguiding the running strand properly to the tension device and Forpreventing the interference 01' adjacent strands by the l'ialloomngcaused by the rapid rotation oi the yarn carrier.

Another hiaturc of the invention consists in providing means forpreventing unskilled operators from tampering with the tension device. v

Another feature of the invention consists inproviding means for swingingthe bobbin supporting spindles out of operative relation to theirrespective tension devices to fa- Patented Aug. 28-, 1917;

cilitate the clotting and replacement of the' I bobbins.

Other objects of the invention and the nature thereof will more fullyappear from the following description and the HCCOIXM,

pointed out panying drawings and will he in the annexed claims.

The drawings illustrate a portion Ora spooler with the thereto.

In the drawings:

Figure l is a transverse sectional view of present invention applied asufficient portion of a: spoolor to illustrate the application of thepresent invention thereto, i

Fig. 2 is a sideelevation of a embodimentof my invention,

Fig. 3 is a median sectional viewot the tension device illustrated inFig.2 on line 38 Fig, 2, therotatable tension member being shown inelevation the dev ce being shown in vertical position for convenience inreading.

Fig. d is a side elevation showing the friction member which controlsthe rotation of the rotatahletension cylinder in dotted lines, certainparts of the casing having been removed, I Fig. 5 is a view of a keyfor-regulating the tension.

preferred I of the same,

Fig. 6 is a vertical sectional view of a.

modified form of rotatable tension device of the class above describedand,

Fig. 7 is an end view thereof. The yarn winding machine illustrated inthe drawing may he a spooler of the usual type having a frame 1supporting a series of spool carriers'ifi upon which are mounted spools3, the spool carriers being driven of bolts The novel tension deviceforming the present invention consists of a rotatable member carriedupon a stand 10 which preferably is provided with a flanged jaw 11adapted to embrace the rod 12 which extends longitudinally of themachine frame, said jaw being secured thereto by a set screw 13 passingthrough one member of the jaw and abutting against the rod 12.

The spindle H for supporting the bobbin preferably is secured to abracket 15 by means of a set screw 16, the bracket 15 being pivotallymounted upon a stud or bolt 17 extending laterally from an extension 18of the lower end of the stand 10. The pivotal member 17 preferably is inthe form of a screw headed bolt having a spring washer 19 interposedbetween the nuts 20 and the side of the extension 18.

The brackct'lo desirably is provided with divergent lugs 21, 22suliiciently spaced apart that when the 11o 21 is in engagement with theflange 11 of the jaw 11 the axis of the spindle l-t will besubstantiallyin alinement with the tension device and when the lug 22 isinengagement with the flnage 11" the spindle 14: will be sullicientlyout of alinemont with the tension device to permit tree removal of thebobbin or other yarn carrier.

'lhe frictional pivotal connection between the bracket 15 and the stand10 will retain the spindle 1-t either in operative or inoperativeposition when placed there by the operator.

In order that the tension device may be located at approximately thesame distance from the end of the bobbin or other yarn carrier, eventhough yarn carriers of different lengths are used, the stand 10 isprovided with an adjustable extension 23 pretcrably connected totbeistand by a bolt 2-1. passing through slots 25 in the stand 10 andextension 2?. The extension 23 is provided with a lateralv extension orgoose neck 26 upon which is mounted, or formed integral therewith, oneof the members 27 ot' the casing which incloscs the rotatable Frictionalmcmber.

The member 27 prcl'crably is substantially conoidal in form and il'dosircd may be providcd with u bcak 27' to insure the guiding ,casingmembcr ol' the yarn and to prcvcut the interference of adjacent strandsby ballooning. The casing mcmbcr L? is providcd at its smaller cud witha prcl'crably c. \'lindrical recess .28, and the inncr wall of thercccss may. if dcsircd, bc nmcbincd to prcscut a smooth surl'aco 29adaplcd to engage the cud ol' the rotatable tcnsion lllllllllll illh lhcrcccss 28 being of such a dcpth that tho edge iii f the .47 will be insubstantially 'ilhe mcdian trausvcrsc plane of thc surface 'ol therotatablc mcmbcr.

'lhe rotatable lcnsion mcmbcr Lit) desirably is provided with a hardnon-slipping surface which will resist wear from the rapidly runningthread and which may be knurled, striated or otherwise roughened to gripthe yarn, but which preferably is a granular surface formed by coating acylinder with carborundum, emery or other usual abradant.

It is desirable that the rotatable tension member shall beconstructed ofmaterial of light weight, such as wood, in order to eliminate as far aspossible the momentum acquired by the rapid rotation of the member, sothat its speed of revolution may be sensitively varied, that is,retarded or accelerated according to any requirements in the operationof the machine such as in starting the device or by the sudden arrestoii ihe tension member due to the kinking of 'the yarn, thus avoidingundue variations in tension upon the yarn which would be caused by themomentum of a relatively heavy rotatable tension member.

By having the rotatable tension member of relatively large diameter thetension 1111-- poscd upon the yarn will not beali'ected by changes inthe speed of the yarn caused by the building up of the winding upon thespool, consequently no compensating mechanism is required; furthermorethe variation in thickness, weight, or stili'ncss of the yarn will notmaterially allect the tension imposed upon it by a rotatable tensionmember of the character above described.

The rotatable tension member preferably is made of a wood of suchporosity that it is capable of absorbing oil freely so that the cylinderwhen soaked in oil may be run continuously without the necessity offurther lubri -ation.

The cylindrical tcnsion member 30 may conveniently be mounted upon a pinor stud 33 projecting axially from the casing member 27 and its freedomof revolution controlled by a friction disk 31 pressing against theopposite end of the cylinder from that which rests against the machinedsurface :29. The pressure bctwccn the friction disk 34 and the end ofthe -ylinder may convenicutly bc rcgulatcd by a nut 35 mounted upon alull haml screw ill) upon the stud 33, a spring washer Iii' desirablybcing interposed bctwccn said nut and the tension disk to pcrmit aproper amount of slippage of the rotatable tension member to preventhrcaking thc yarn. 'lhc spring washer 37 may, as illustralcd in Fig. -l,he in the form of a hub 35 having laterally extending arms an engagingthe friction disk :il.

'lhc stud 233 )rctcrablv is novidcd with The adjacent ends of theconoidal casing members 27 and 41 are spaced apart a short a bearing forthe shank 47 of the key, (see Fig. 5) which conveniently may be made inthe form of a cylinder having a knurled end gripping portion 48 and atoothed end 49 adapted to engage teeth 50 in the cylindrical peripheryof the'nut 35. It will be obvious from the construction thus describedthat a skilled operator such as the foreman maybe provided with a key bywhich he may adjust the pressure of the friction disks against therotatable tension members to provide a uni-. form spooling tensionthroughout the entire yarn Winding machine and having once set thetension device remain assured that unskilled operators will not tamperwith the same. f

The stands 10.1nay be adjusted upon the rods 12 so that the axis of thespindles 14: may be positioned at any desirable inclination, such asthat illustrated in Fig. 1, and by reason. of the adjustability of theextension 23 of-the stand 10 the tension device may be placed at thedesired distance from the ends of the yarn carriers Whether the same beshort or relatively long.

Theaxcs of the spindles preferably aretangential to the surface of thecylindrical tension member and in the operation of the machine the yarnis carried directly over the tension member, or preferably with one turnabout the same," so that there is always a positive engagement betweenthe yarn and the rotatable frictional member and a uniform tensionthereby interposed upon the running strand, and led therefrom directlyover the traverse rod 7, through the guide 6 to the spool or other yarnreceiver. The

'conoida-l surfaces of the casing members 27,

41 serve to.direct the yarn, notwithstanding its ballooning, into theslot or space between the adjacent ends of said members.

It is found in practice that the roughened or granular surface of therotatable'tension member serves not only to ll'ltllllllillll"il1l eventension upon thd yarn but also removes bars and imperfections from theyarn and by reason of the rapidity of its rotation develops a suflicientcentrifugal force to render the device self clearing, thereby avoidingthe necessity of stopping the machine to remove the accumulation oflint, etc, in the tension device.

In Figs. 6 and 7 a modified form of tensi'on device is illustrated. Inthis device the goose neck 26 of the extension 23 is pro videdavith aspherical socket 51 which receivcs a spherical head 52 extendingce1itrally from the base of the conoidal casin member 5% the member 54:bein )rovided with a. preferably conical recess the flat base 55 ofwhich is adapted to engage frictionally the end of the rotatable tensionmember, 57, the cylindrical surface of which is provided with aroughened or granular yarn engaging surface 58 of the character abovedescribed. Rotation of the casing member 54 may clfectivcly be preventedby a lug or fin 26* upon the goose'neck 26 engaging a suitable recess ontheback of the casing. v

The rotatable tension member 58 may conveniently be mounted upon a shaft59 extending centrally through the spherical boss 51 of the casing andhaving a screw threaded portion OO'cngaging screw threads ($1 in anaperture extending through the goose neck 26.

A set nut 62, which may be in the form of a toothed or lmurled'whcel,may be provided to maintain the shaft (30 in adjusted position. Thecooperating casing member (33 also is preferably conical in formcomplementary to the recess in the using member 54 and the flat base (34of said recess engages the opposite end of the rotatable tension member58to that engaged by the base 55 of the casing member 54. The casmgmember (33 desirably is provided with oppositely disposed inwardlyextending ribs or lugs (36, 67 which forina seat for a spring 68preferably in'the form of a wire passing through an aperture 70 in tlie'gu or end of the shaft 59 so that the casing inc inber 63 is retained inyielding frictional engagement With the end (35 of the rotatable membervIn order to adjust; the tension in this de-v vice the set nut 62 isreleased and the conoidal casing member 63 rotated to screw thefrictional surface more tightly against the conoidal end of therotatable member or,

panying claims and that various other forms of adjustment therefor maybe used.

It Wlll also be understood that the features of construction disclosedherein are illustrative merely and that various modifications may bemade within the spirit and scope of the following claims.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In a winding machine in which the yarn is wound from a yarn carrierupon the rotating yarn receiver, a rotatable tcnsion member located inproximity to the end of said yarn carrier engaging the running strandand rotated thereby, and means for adjusting the rotating tension membertoward and from the end of the yarn carrier in the direction of the axisof said yarn carrier whereby said tension member will be properlylocated in respect to the ends of yarn carriers of different lengths.

In a yarn winding machine a tension device .comprising a rotatablecylindrical member having a non-slipping yarn engaging surface, narrowlyseparated casing members surrounding said rotatable tension memberhaving oppositely inclined surfaces for guiding the strand into positionupon said cylindrical member and means frictionally engaging theiends ofsaid member inclosed within sala casing members.

3. Ina yarn winding machine a tension device comprising a rotatablecylindrical member constructed of a porous material impregnated with alubricant and having a non-slipping thread engaging surface, means forguiding the running strand thereupon and means frictionally engagingsaid member to control the rotation thereof.

4. In a yarn winding machine, a tension device jcomprising a rotatablecylindrical member constructed of wood soaked in a lubricaht and havingits cylindrical surface coated {with a granular substance, means forguiding the running strand thereupon and means-frictionally engagingsaid rotatable member. I I

5. A; tension device for a running strand of yarn comprising twooppositely disposed conical; members having recesses in adjacent endsand spaced apart to form a guideway for the running strand, acylindrical tension member rotatably mounted within said recess havingone end engaging one of said members, a frictional instrnmentalitycarried by the other stationary member engaging the opposite end of saidrotatable member, and means for adjusting said frictionalinstrumentality.

(S. A tension device for a running strand of yarn comprising twooppositely disposed conical members having recesses in adjacent ends andspaced apart to form a gnideway for the running strand, a cylindricalyarn engaging member mounted within said recess upon a shaft connectingsaid conical members and having one end engaging one of said members, a.friction disk engaging the opposite end of said rotatable member, aspring engaging said disk, and means for adjusting the pressure uponsaid spring.

7. A tension device for a running strand of yarn comprising twooppositely disposed conical members having recesses in adjacent ends andspaced apart to form a guideway for the running strand, a cylindricalyarn guiding member rotatably mounted within said recess upon a shaftconnecting said conical members and having one end engaggaging theopposite end of said. rotatable member, a spring engaging said. disk andmeans for adjusting the pressure upon said spring comprising a nuthaving a toothed periphery mounted upon said shaft, and a bearing in oneof said conical members adapted to receive a key for rotating said nut.I

8. A. tension device for a running strand oi yarn comprising a rotatabletension member adapted to engage the yarn and be rotated thereby, acasing substantially inclos-' ing said rotating member, meansfrictionally engaging said rotating member and means operable by a keyinserted through-an aperture in said casing for adjusting the pres sureof said frictional engaging means upon said rotatable member.

9. A tension device for a rotating strand comprising a tension memberrotatably mounted upon a shaft within a substantially closed casing andadapted to be engaged and. rotated by the running strand, meansfriction-ally engaging said rotatable member, a nut screw threaded uponsaid shaft and adapted to be rotated to regulatethe pressure upon saidfrictional means, said nut being provided with a toothed cylindricalperiphery, adapted to be rotated by a key having complementary teeth.

10. In a yarn winding machine a stand having a lateralextensionsupporting a tension device connected to the side rail of the machine, aspindle supporting bracket pivotally connected to said stand and adaptedto be adjusted to position the axis of the spindle in substantialalinement with the tension device or to be swung from said position i tofacilitate the 'dofiing of the yarn carrier and means for adjusting theposition of said tension device in the direction of the axis of saidspindles.

11. In a yarn winding machine a stand connected to the side rail or themachine and provided with an arm' formed of two relatively adjustablesections, a rotatable tension device upon the end section, a spindlesupporting bracket pivotally connected to said stand and adapted to beadjusted to position the axis of the spindle in substantial alinementwith the tension device or to be swung from said position to facilitatemg one of said members, a friction disk enthe doflingof the yarncarrier; frictional.

'Jneans for retaining said spindle supporting bracket in adjustedpositions, and means "for limiting the extent of said swinging movement.

12. In a yarn Winding machine a stand havinga lateral extensionSUPPOItilXg a teus'ion device connected to the side rail of the machinea spindle supporting bracket pivotally coi'inected tosaid stand andadapted to be adjusted to position. the axis of the spindle insubstantial alinement with the tension device or to he swung from saidposition to facilitate the dofling of the yarn carrier, frict onal meansfor retaining said spindle supporting-bracket in adjusted positions, andmeans for limiting the extent of said swinging movement,consisting oftwo 'interengaging extensions upon "said stand andbnacket adapted topermit a predetermined limited'relative movement.

13. In a yarn Winding machine stand", f

Men-.- q to the-siderail ofthe' 1 I having a lateral extension supportinsion device, connected I machine, a splndie supporting bracket-plyetallyconnected to said stand and adapted to be adjusted to positionthe'exisjof the spindle in substantial aliriemern't ivith the i tensiondevice or to lie swung from said p'osition to facilitate the doiiingofthe'jarncarmeans f01f- -etain-ingj said spindle suppor tingbracket' inadjusted posis tions, and means for limiting theeXtent-of said swingingmovement, censistin" 'of a to rier, frictionai pair ofdivergentprojections on said racket"- embracing a relatively stationaryprojec} l tion on said stand and spaced apart. sufiic'ientiy to permit apredetermined relative movement therebetween. 1 I In testimony whereof,I have signed my name to this epeeifieatiom

